Only when you leave your parents for college education _______ how much you love them.
| A．do you realize | B．you realize | C．you will realize | D．will you realize |
Can you explain ______ that the medicine has for my illness?
| A．about the function to me | B．me about the function |
| C．me the function | D．to me the function |
--- I serve three meals every day and do almost everything for him, but he still lets me down.
--- I’m afraid that’s ______ you are mistaken.
| A．how | B．where | C．what | D．in which |
China’s winning the host of the Olympic was an exciting moment, ______ all Chinese will never forget.
| A．that | B．it | C．one | D．what |
Measures have been taken to prevent accidents, but much ______ for more improvement.
| A．remains to be done | B．is remained to do |
| C．remains to do | D．is remained to be done |
. As we all know, it was ______ that resulted in the terrible car accident.
| A．because of her carelessness | B．for her to be careless |
| C．because she was careless | D．her being careless |